# iDeveloper vs Decibel Meter

The clearest difference is in-app purchases: Decibel Meter at none against iDeveloper's 1. Decibel Meter also leads on iOS requirement (15.0 vs 17.0). iDeveloper's advantage is update cadence (weekly vs every 3 months). On price, ads and device support there is nothing between them.

iDeveloper costs $0.29 and Decibel Meter $0.99 up front. iDeveloper sells 1 one-off in-app purchase. Decibel Meter asks for nothing beyond the download.

iDeveloper ships an update weekly, Decibel Meter every 3 months. The most recent releases landed on November 2, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | iDeveloper | Decibel Meter |
| --- | --- | --- |
| Price | **$0.29** | $0.99 |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/decibel-meter-sound-test/id6764498347/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 months |
| Monetization | — | Paid |
| Size | 14 MB | 41 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [天从 何](https://appshunter.io/developer/914453386) | [恒盛 程](https://appshunter.io/developer/1533201832) |

## What reviewers say

### iDeveloper

[App page](https://appshunter.io/ios/app/ideveloper-190-plus-tools/id1240856775)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Reward developers | $0.99 | one-time |


### Decibel Meter

[App page](https://appshunter.io/ios/app/decibel-meter-sound-test/id6764498347)

Measure ambient sound levels in real-time using your device's microphone. Understand your environment's noise status, save measurement sessions, and generate PDF reports with data and scene photos. Useful for everyday reference and record-keeping.

**Highlights:** Real-time decibel readings, Spectrum analysis, Environment status labels, Session statistics, Measurement history, Audio playback, Scene photo records, PDF reports

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is iDeveloper free?

iDeveloper costs $0.29, and also offers in-app purchases.

### Is Decibel Meter free?

Decibel Meter costs $0.99, with no in-app purchases.

### Do iDeveloper or Decibel Meter have ads?

Neither iDeveloper nor Decibel Meter shows ads.

### Which is updated more often, iDeveloper or Decibel Meter?

iDeveloper ships an update weekly, and Decibel Meter every 3 months. Most recently, iDeveloper was updated on November 2, 2026 and Decibel Meter on November 9, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*